{"id":4089,"date":"2026-07-07T14:49:59","date_gmt":"2026-07-07T12:49:59","guid":{"rendered":"https:\/\/site2.cerclefser.org\/fr\/?page_id=4089"},"modified":"2026-11-07T20:58:42","modified_gmt":"2026-11-07T19:58:42","slug":"anecdote-et-biais-de-confirmation-a-lepreuve-de-la-demarche-scientifique-la-chance-existe-t-elle","status":"publish","type":"page","link":"https:\/\/cerclefser.org\/fr\/anecdote-et-biais-de-confirmation-a-lepreuve-de-la-demarche-scientifique-la-chance-existe-t-elle\/","title":{"rendered":"Anecdote et biais de confirmation \u00e0 l\u2019\u00e9preuve de la d\u00e9marche scientifique : La chance existe-t-elle ?"},"content":{"rendered":"\n<figure class=\"wp-block-image aligncenter is-resized\" style=\"margin-top:var(--wp--preset--spacing--40);margin-bottom:var(--wp--preset--spacing--40)\"><img decoding=\"async\" src=\"http:\/\/www.cerclefser.org\/fr\/wp-content\/uploads\/2022\/11\/LOGO-DISCERNE-300x153.png\" alt=\"LOGO DISCERNE\" style=\"aspect-ratio:1.9609845776733734;width:400px;height:auto\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-center\"><strong>3. Anecdote et biais de confirmation \u00e0 l&rsquo;\u00e9preuve de la d\u00e9marche scientifique\u00a0:<\/strong><\/h2>\n\n\n\n<h4 class=\"wp-block-heading has-text-align-center\" style=\"margin-top:var(--wp--preset--spacing--10);margin-bottom:var(--wp--preset--spacing--30);font-size:clamp(20px, 1.25rem + ((1vw - 3.2px) * 1.25), 32px);\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#e1b505\" class=\"has-inline-color\">La chance existe-t-elle ?<\/mark><\/strong><\/h4>\n\n\n\n<p class=\"has-text-align-center alignwide wp-block-paragraph\" style=\"margin-right:var(--wp--preset--spacing--40);margin-bottom:var(--wp--preset--spacing--40);margin-left:var(--wp--preset--spacing--40);padding-top:0;padding-right:var(--wp--preset--spacing--60);padding-bottom:0;padding-left:var(--wp--preset--spacing--60);font-size:clamp(14.082px, 0.88rem + ((1vw - 3.2px) * 0.721), 21px);\">Une personne qui se consid\u00e8re comme malchanceuse et qui lance un d\u00e9 pour faire le plus grand nombre possible accordera plus d\u2019importance \u00e0 l\u2019obtention de 1 (\u201cj\u2019avais bien dit que je n\u2019avais pas de chance !\u201d) qu\u2019\u00e0 l\u2019obtention d\u2019un 6, alors m\u00eame que la probabilit\u00e9 est la m\u00eame. C\u2019est ce qu\u2019on appelle le biais de confirmation, qui consiste \u00e0 porter notre attention sur ce qui renforce nos convictions : d\u2019o\u00f9 l\u2019impression erron\u00e9e d\u2019\u00eatre chanceux ou malchanceux.<br>En menant eux-m\u00eames une exp\u00e9rience simple bas\u00e9e sur le hasard, les enfants vont pouvoir muscler leur esprit critique en :<br><br>-V\u00e9rifiant que la chance n\u2019existe pas,<br>-Apprenant ce qu\u2019est le biais de confirmation,<br>-Voyant qu\u2019en appliquant la d\u00e9marche scientifique, on peut passer outre ce biais.<br><br>Afin de familiariser les enfants avec la d\u00e9marche scientifique, vous pouvez faire en amont la s\u00e9quence DIScERNE sur ce th\u00e8me. (Voir fiche s\u00e9quence 2)<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-center\" style=\"margin-top:var(--wp--preset--spacing--40);margin-bottom:var(--wp--preset--spacing--40)\"><mark style=\"background-color:rgba(0, 0, 0, 0);color:#e1b505\" class=\"has-inline-color\">T\u00e9l\u00e9chargez <\/mark><a href=\"https:\/\/www.cerclefser.org\/fr\/wp-content\/uploads\/2023\/01\/Guide-dutilisation-DIScERNE.pdf\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#e1b505\" class=\"has-inline-color\">ici<\/mark><\/strong><\/a><mark style=\"background-color:rgba(0, 0, 0, 0);color:#e1b505\" class=\"has-inline-color\"> le guide d\u2019utilisation des s\u00e9quences DIScERNE<\/mark><\/h3>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-5ceee6c0 wp-block-columns-is-layout-flex\" style=\"padding-top:0;padding-right:var(--wp--preset--spacing--20);padding-bottom:0;padding-left:var(--wp--preset--spacing--20)\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"padding-top:0;padding-bottom:0\">\n<figure class=\"wp-block-table aligncenter\" style=\"font-size:clamp(14.082px, 0.88rem + ((1vw - 3.2px) * 0.721), 21px);\"><table class=\"has-fixed-layout\" style=\"border-style:none;border-width:0px\"><tbody><tr><td class=\"has-text-align-right\" data-align=\"right\"><strong>Classes vis\u00e9es<\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\">Cycle 2 et 3<\/td><\/tr><tr><td class=\"has-text-align-right\" data-align=\"right\"><strong>Disciplines principales<\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\">Sciences<\/td><\/tr><tr><td class=\"has-text-align-right\" data-align=\"right\"><strong>Lien sp\u00e9cifique avec le programme scolaire<\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\">Familiariser les \u00e9l\u00e8ves avec une d\u00e9marche de questionnement dans les diff\u00e9rents champs du savoir, d\u00e9velopper leur sens de l\u2019observation, leur curiosit\u00e9, leur esprit critique et, de mani\u00e8re plus g\u00e9n\u00e9rale, leur autonomie de la pens\u00e9e.<\/td><\/tr><tr><td class=\"has-text-align-right\" data-align=\"right\"><strong>Dur\u00e9e<\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\">3h en deux s\u00e9ances<\/td><\/tr><tr><td class=\"has-text-align-right\" data-align=\"right\"><strong>Pr\u00e9paration<\/strong><\/td><td class=\"has-text-align-left\" data-align=\"left\">environ 1h<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-embed is-type-rich is-provider-prise-en-charge-des-contenus-embarqu-s wp-block-embed-prise-en-charge-des-contenus-embarqu-s wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"DIScERNE 3 - Anecdote et biais de confirmation \u00e0 l\u2019\u00e9preuve de la d\u00e9marche scientifique (primaire)\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/x9iMly1ID8Q?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n<\/div>\n<\/div>\n\n\n\n<h4 class=\"wp-block-heading has-text-align-center\" style=\"padding-top:var(--wp--preset--spacing--30);font-size:clamp(21.536px, 1.346rem + ((1vw - 3.2px) * 1.402), 35px);\"><strong>T\u00e9l\u00e9chargez les \u00e9l\u00e9ments de la s\u00e9quence pour le public scolaire :<\/strong><\/h4>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\" style=\"margin-top:var(--wp--preset--spacing--10);margin-bottom:var(--wp--preset--spacing--10);font-size:clamp(16.834px, 1.052rem + ((1vw - 3.2px) * 0.955), 26px);\"><a href=\"https:\/\/www.cerclefser.org\/fr\/wp-content\/uploads\/2024\/07\/3-DIScERNE-Anecdote-et-biais-de-confirmation-%C3%A0-l%E2%80%99%C3%A9preuve-de-la-d%C3%A9marche-scientifique.pdf\"><mark style=\"background-color:rgba(0, 0, 0, 0);color:#e1b505\" class=\"has-inline-color\"><strong>DIScERNE 3 : Remonter \u00e0 la source d\u2019une information (primaire)<\/strong><\/mark><\/a><\/p>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\" style=\"margin-top:var(--wp--preset--spacing--10);margin-bottom:var(--wp--preset--spacing--10);padding-top:0;padding-bottom:0;font-size:clamp(16.834px, 1.052rem + ((1vw - 3.2px) * 0.955), 26px);\"><a href=\"https:\/\/www.cerclefser.org\/fr\/wp-content\/uploads\/2024\/07\/3-DIScERNE-Annexes.pdf\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#e1b505\" class=\"has-inline-color\">DIScERNE 3 Annexes<\/mark><\/strong><\/a><\/p>\n\n\n\n<h4 class=\"wp-block-heading has-text-align-center\" style=\"padding-top:var(--wp--preset--spacing--40);padding-right:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30);font-size:clamp(21.536px, 1.346rem + ((1vw - 3.2px) * 1.402), 35px);\"><strong>T\u00e9l\u00e9chargez les \u00e9l\u00e9ments de la s\u00e9quence pour les biblioth\u00e8ques, m\u00e9diath\u00e8ques&nbsp;et centres de culture scientifique :<\/strong><\/h4>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\" style=\"margin-top:var(--wp--preset--spacing--10);margin-bottom:var(--wp--preset--spacing--10);padding-top:0;padding-bottom:0;font-size:clamp(16.834px, 1.052rem + ((1vw - 3.2px) * 0.955), 26px);\"><a href=\"https:\/\/www.cerclefser.org\/fr\/wp-content\/uploads\/2024\/07\/BIB-3-DIScERNE-Anecdote-et-biais-de-confirmation-%C3%A0-l%E2%80%99%C3%A9preuve-de-la-d%C3%A9marche-scientifique.pdf\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#e1b505\" class=\"has-inline-color\">DIScERNE 3 : Remonter \u00e0 la source d\u2019une information<\/mark><\/strong><\/a><\/p>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\" style=\"margin-top:var(--wp--preset--spacing--10);margin-bottom:var(--wp--preset--spacing--10);font-size:clamp(16.834px, 1.052rem + ((1vw - 3.2px) * 0.955), 26px);\"><a href=\"https:\/\/www.cerclefser.org\/fr\/wp-content\/uploads\/2024\/07\/BIB-3-DIScERNE-Annexes.pdf\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#e1b505\" class=\"has-inline-color\">DIScERNE 3 Annexes<\/mark><\/strong><\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-center\" style=\"margin-top:var(--wp--preset--spacing--60)\">Projet soutenu par :<\/h2>\n\n\n\n<div class=\"wp-block-columns alignwide are-vertically-aligned-center is-layout-flex wp-container-core-columns-is-layout-6c44b884 wp-block-columns-is-layout-flex\" style=\"margin-top:var(--wp--preset--spacing--10);margin-bottom:var(--wp--preset--spacing--10);padding-right:var(--wp--preset--spacing--50);padding-left:var(--wp--preset--spacing--50)\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter is-resized\"><img decoding=\"async\" src=\"http:\/\/www.cerclefser.org\/fr\/wp-content\/uploads\/2022\/11\/MIN_Culture_RVB-300x228.jpg\" alt=\"MIN_Culture_RVB\" style=\"width:217px;height:auto\"\/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter\"><img decoding=\"async\" src=\"http:\/\/www.cerclefser.org\/fr\/wp-content\/uploads\/2022\/11\/Cercle-FSER.jpg\" alt=\"Cercle-FSER\"\/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter\"><img decoding=\"async\" src=\"http:\/\/www.cerclefser.org\/fr\/wp-content\/uploads\/2022\/11\/logo-genopolys.png\" alt=\"logo-genopolys\"\/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group alignfull has-global-padding is-content-justification-right is-layout-constrained wp-container-core-group-is-layout-359cab2e wp-block-group-is-layout-constrained\" style=\"padding-top:var(--wp--preset--spacing--40);padding-right:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-a49a8f3a wp-block-columns-is-layout-flex\" style=\"margin-top:0;margin-bottom:0;padding-top:0;padding-bottom:0\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"padding-top:0;padding-bottom:0;flex-basis:50%\">\n<p class=\"has-text-align-left wp-block-paragraph\"><strong>\u00c9quipe de production des s\u00e9quences :<\/strong><br>Dr K. de Checchi, Ing\u00e9nieur de recherche en p\u00e9dagogie<br>Dre M. Kitzmann, Directrice Adjointe de Genopolys<br>C. Le Guelvouit, Charg\u00e9 de mission d\u2019accompagnement chez \u00catrePROF \u2013 Ancien professeur de Math\u00e9matiques<br>Dre M. P\u00e9quignot, Chercheuse et chef de projet de m\u00e9diation scientifique<br>Dre T. Louis, M\u00e9diatrice scientifique et conceptrice de contenus p\u00e9dagogiques<br><br><strong>\u00c9quipe de conception et de coordination du projet :<\/strong><br>Dre H.D. Dufour, Directrice, Le Cercle FSER<br>F. Bilak, Charg\u00e9e de projet, Le Cercle FSER<br><br><strong>Cr\u00e9atrice du logo :<\/strong><br>E. Pelc, Responsable de la communication, Le Cercle FSER, France<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<p class=\"has-text-align-left wp-block-paragraph\"><strong>Vid\u00e9astes ayant travaill\u00e9 sur le projet DIScERNE\u00a0<\/strong>:<br>Franck Dunas de la cha\u00eene Youtube <a href=\"https:\/\/www.youtube.com\/channel\/UCXO8f8SAVP02zSAxnSvtYHw\">mathador<\/a><\/p>\n\n\n\n<p class=\"has-text-align-left wp-block-paragraph\"><br><br><\/p>\n<\/div>\n<\/div>\n\n\n\n<figure class=\"wp-block-image aligncenter is-resized\" style=\"margin-top:0;margin-bottom:var(--wp--preset--spacing--20)\"><img decoding=\"async\" src=\"http:\/\/www.cerclefser.org\/fr\/wp-content\/uploads\/2022\/11\/LOGO-DISCERNE-300x153.png\" alt=\"LOGO DISCERNE\" style=\"aspect-ratio:1.960976777591573;width:270px;height:auto\"\/><\/figure>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>3. Anecdote et biais de confirmation \u00e0 l&rsquo;\u00e9preuve de la d\u00e9marche scientifique\u00a0: La chance existe-t-elle ? Une personne qui se consid\u00e8re comme malchanceuse et qui lance un d\u00e9 pour faire le plus grand nombre possible accordera plus d\u2019importance \u00e0 l\u2019obtention de 1 (\u201cj\u2019avais bien dit que je n\u2019avais pas de chance !\u201d) qu\u2019\u00e0 l\u2019obtention d\u2019un [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-1","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-4089","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Anecdote et biais de confirmation \u00e0 l\u2019\u00e9preuve de la d\u00e9marche scientifique : La chance existe-t-elle ? - Cercle FSER<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cerclefser.org\/fr\/anecdote-et-biais-de-confirmation-a-lepreuve-de-la-demarche-scientifique-la-chance-existe-t-elle\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Anecdote et biais de confirmation \u00e0 l\u2019\u00e9preuve de la d\u00e9marche scientifique : La chance existe-t-elle ? - Cercle FSER\" \/>\n<meta property=\"og:description\" content=\"3. 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Une personne qui se consid\u00e8re comme malchanceuse et qui lance un d\u00e9 pour faire le plus grand nombre possible accordera plus d\u2019importance \u00e0 l\u2019obtention de 1 (\u201cj\u2019avais bien dit que je n\u2019avais pas de chance !\u201d) qu\u2019\u00e0 l\u2019obtention d\u2019un [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/cerclefser.org\/fr\/anecdote-et-biais-de-confirmation-a-lepreuve-de-la-demarche-scientifique-la-chance-existe-t-elle\/\" \/>\n<meta property=\"og:site_name\" content=\"Cercle FSER\" \/>\n<meta property=\"article:modified_time\" content=\"2026-11-07T19:58:42+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/www.cerclefser.org\/fr\/wp-content\/uploads\/2022\/11\/LOGO-DISCERNE-300x153.png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/cerclefser.org\\\/fr\\\/anecdote-et-biais-de-confirmation-a-lepreuve-de-la-demarche-scientifique-la-chance-existe-t-elle\\\/\",\"url\":\"https:\\\/\\\/cerclefser.org\\\/fr\\\/anecdote-et-biais-de-confirmation-a-lepreuve-de-la-demarche-scientifique-la-chance-existe-t-elle\\\/\",\"name\":\"Anecdote et biais de confirmation \u00e0 l\u2019\u00e9preuve de la d\u00e9marche scientifique : La chance existe-t-elle ? 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